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layout_text_to_speech.xml <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:pad...

Cold observable implementation, emits true when TTS engine finishes speaking, starts speaking when subscribed. Notice that API level 21 introduces different way to perform speaking: public class RxTextToSpeech { @Nullable RxTTSObservableOnSubscribe audio; WeakReference<Context> contextR...